CN202180841U - Brake structure and wheelchair with same - Google Patents
Brake structure and wheelchair with same Download PDFInfo
- Publication number
- CN202180841U CN202180841U CN2011202632949U CN201120263294U CN202180841U CN 202180841 U CN202180841 U CN 202180841U CN 2011202632949 U CN2011202632949 U CN 2011202632949U CN 201120263294 U CN201120263294 U CN 201120263294U CN 202180841 U CN202180841 U CN 202180841U
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- China
- Prior art keywords
- friction wheel
- mandrel
- brake
- wheelchair
- lockout mechanism
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Abstract
The utility relates to a brake structure and a wheelchair with the same. The brake structure comprises a mounting bottom plate and a brake component, the mounting bottom plate is fixedly connected with a wheelchair frame, the brake component is movably disposed on the mounting bottom plate and used for contacting with and rubbing with a rear wheel of the wheelchair, the brake component comprises a mandrel, a friction wheel and a locking mechanism, wherein the friction wheel can be unidirectionally rotationally sleeved on the mandrel, the locking mechanism is used for realizing relative standstill locking of the friction wheel and the mandrel, when the locking mechanism is in a locked state, the friction wheel and the mandrel are in relative standstill locking, and when the locking mechanism is in an unlocked state, the friction wheel only can rotate unidirectionally relative to the mandrel. The brake structure can realize half brake and total brake, realizes half brake when the wheelchair runs on a slope, increases advancing resistance or prevents the wheelchair from travelling backwards, and realizes total brake when the wheelchair runs on a flat road, and accordingly free advancing or backward movement of a user is not affected.
Description
Technical field
The wheelchair that the utility model relates to a kind of brake structure of wheelchair and has this brake structure.
Background technology
Wheelchair is specific crowd as its function setting of medical specialized equipment service object, to satisfy the needs that they ride instead of walk.Along with the variety of technological advance and consumption demand, to the also increase day by day of various functional requirement of wheelchair.
Present wheelchair commonly used mainly comprises vehicle frame, front-wheel, trailing wheel and the brake structure that is used to brake etc.; This brake structure is through a brake lever or brake facing being pressed on the outer ring of trailing wheel, realizing drag through brake facing or brake lever friction trailing wheel outer ring mostly.Because behind the Brake of wheel-chair of the prior art, trailing wheel is fixed extremely, can not move ahead and can not retreat; Therefore bring difficulty can for the more weak or comparatively slow user of reaction of some strength; Such as, when running into the abrupt slope, for the not enough user of strength; The upward slope process can be very painstaking, and the user saunters after continuous rotation trailing wheel hand circle can make wheelchair constantly advance just to be unlikely to apace; If the user hopes in the way of going up a slope, to have a rest, just must brake structure is locked, have a rest and finish, saunter after wheelchair just is easy to when opening brake, meet accident; And when descending, apply the brakes not normally, the user only with the hands controls trailing wheel hand circle, and the control descending speed if user's strength is not enough or control is improper, also is easy to sweep away the abrupt slope, meets accident.
The utility model content
The purpose of the utility model is that the deficiency to prior art provides a kind of Brake of wheel-chair structure, can be implemented under half braking state, wheelchair still can folk prescription to advancing, prevent simultaneously to saunter behind the wheelchair.
For achieving the above object; The technical scheme that the utility model adopts is: a kind of brake structure; Comprise with the installation base plate of wheelchair frame captive joint, be movably arranged on the described installation base plate and in order to contact and the brake assemblies of the wheelchair trailing wheel that rubs; Described brake assemblies comprise mandrel, can folk prescription to being set in friction wheel on the described mandrel rotationally, being used to make the lockout mechanism of described friction wheel and the relative spline of described mandrel; When described lockout mechanism is in the lock state, the relative spline of described friction wheel with described mandrel; When described lockout mechanism was in released state, described friction wheel only can rotate to single direction with respect to described mandrel.
Preferably, be provided with unilateral bearing between described friction wheel and the described mandrel.
Preferably; Described lockout mechanism comprises: with the relatively-stationary lockplate of described mandrel be movably connected in the locking component on the described lockplate; All offer jack on described lockplate and the described friction wheel; When described lockout mechanism was in the lock state, the end of described locking component was passed described lockplate and is inserted in the jack on the described friction wheel; When described lockout mechanism was in released state, described locking component broke away from the jack of described friction wheel.
Preferably; Described lockout mechanism also comprises the clutch end cap that can flexibly be connected vertically on the described mandrel; Described locking component is fixed on the described clutch end cap, described friction wheel, lockplate and clutch end cap vertically serial arrangement on described mandrel.
Preferably, described lockplate is arranged on the sidepiece of described mandrel, and when described lockout mechanism was in the lock state, the end of described locking component was passed described lockplate and radially is inserted in the jack on the described friction wheel; When described lockout mechanism was in released state, described locking component broke away from the jack of described friction wheel.
Preferably, described locking component flexibly is connected on the described lockplate.
Preferably; Described brake structure also comprises the handle that is rotatably connected on the described installation base plate, be rotatably connected on swing arm, an end and the described handle installation of installing on the base plate connecting rod that the other end and described swing arm be hinged that is hinged, and described mandrel is fixedly installed on an end of described swing arm.
Preferably, the external peripheral surface of described friction wheel has the texture line.
The wheelchair that another purpose of the utility model provides and a kind ofly is easy to control, safe class is higher, it can prevent to saunter behind the wheelchair at half braking state order side to advancing simultaneously.
For realizing this purpose, the technical scheme that the utility model adopts is: a kind of wheelchair, and it comprises a pair of symmetrical vehicle frame, is rotatably connected on front-wheel and trailing wheel on the described vehicle frame, and it also has above-mentioned brake structure.
The utility model principle of work is: pull handle; Make handle drive described connecting rod and swing arm motion; Thereby friction wheel is pressed on the wheelchair trailing wheel outer ring, when lockout mechanism is in the lock state, the relative spline of described friction wheel with described mandrel; Through the friction force brake, trailing wheel can't be rotated by locked between friction wheel and the trailing wheel outer ring; When lockout mechanism was in released state, described friction wheel can be with respect to described mandrel folk prescription to rotation, so the user rotates trailing wheel when advancing, and trailing wheel still can rotate, and just resistance slightly increases; When trailing wheel had the reversing sense movement tendency, under the effect of unilateral bearing, friction wheel stopped operating immediately, prevented the further rotation of trailing wheel through static friction, thereby avoided sauntering behind the wheelchair, realized unidirectional brake.
Because the technique scheme utilization, the utility model compared with prior art has advantage and effect: the utility model can be realized partly stopping, stopping entirely, when going in the abrupt slope, selects half brake, saunters after increasing the resistance that advances or preventing wheelchair; When flat pavement running, can select brake structure to brake entirely, do not influence the user and freely advance or retreat.The utility model can adapt to the real needs of different road conditions, and the safety of increase wheelchair and handling prevents unexpected the generation.
Description of drawings
Accompanying drawing 1 is the block diagram of the wheelchair of the utility model;
Accompanying drawing 2 is the perspective view of brake structure among the embodiment 1 of the utility model;
Accompanying drawing 3 is the exploded view of the brake structure among the embodiment 1 of the utility model;
Accompanying drawing 4 is the schematic perspective view of the brake structure among the embodiment 2 of the utility model;
Accompanying drawing 5 is the exploded view of the brake assemblies among the embodiment 2 of the utility model;
Accompanying drawing 6 is the cutaway view of the brake assemblies among the embodiment 2 of the utility model;
In the accompanying drawing, 1, front-wheel; 2, trailing wheel; 3, vehicle frame; 4, brake structure; 100, base plate is installed; 200, handle; 300, connecting rod; 400, swing arm; 500, brake assemblies; 600, lockout mechanism; 700, pull back spring; 101, primary nut; 102, small screw; 103, ferrule element; 104, pad; 201, taper knob; 202, driving lever; 301, rivet; 501, friction wheel; 502, unilateral bearing; 503, mandrel; 504, mandrel nut; 505, jack; 601, lockplate; 602, locking component; 603, clutch end cap; 604, jack; 605, spring; 606, spring shim.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is further described:
As shown in Figure 1; The utility model relates to a kind of wheelchair; Mainly comprise a pair of symmetrical vehicle frame 3, rotate and be arranged on front-wheel 1 and the trailing wheel 2 on a pair of vehicle frame, can fold through middle support mechanism between a pair of vehicle frame, be fixed with brake structure 4 respectively on each vehicle frame 3.
Embodiment 1: as shown in Figures 2 and 3; This brake structure 4 mainly comprise base plate 100 is installed and is movably arranged on described installation base plate 100 on and in order to contact and the brake assemblies 500 of the wheelchair trailing wheel that rubs; Installation base plate 100 is fixedly connected on the front portion of vehicle frame 3; And near trailing wheel, so that the user operates brake.Install on the base plate 100 and be rotatably connected to handle 200, connecting rod 300, swing arm 400, lockout mechanism 600 and pull back spring 700 etc.Handle 200 comprises taper knob 201 and driving lever 202 and mounting hole (not marking among the figure) etc.; Handle 200 is rotatably connected on through small screw 102 and primary nut 101 and installs on the base plate 100; Between handle 200 and installation base plate 100, also have pad 104 and ferrule element 103, the effect of ferrule element 103 is that handle 200 is rotated around S. A. easily.Swing arm 400 roughly is in the shape of the letter V, and offers 3 hinge points on the swing arm 400, through one of them mounting hole it is rotatably connected on and installs on the base plate 100.Connecting rod 300 is rotationally connected with handle 200 and swing arm 400 respectively, and its connection realizes through rivet 301 and pad 104.Brake back self-return can removed for making swing arm 400; Between handle 200 and swing arm 400, be provided with pull back spring 700 especially; One end of this pull back spring 700 is separately fixed at the hinged place that base plate 100 and handle 200 are installed, and the other end is fixed on the end of swing arm 400.When the user pulled handle 200, handle 200 drivening rods 300 rotated with swing arm 400, thereby drive brake assemblies 500 moves and is pressed on the trailing wheel 2 of wheelchair.
Specifically; Described lockout mechanism 600 comprises: with described mandrel 503 relatively-stationary lockplates 601 be movably connected in the locking component 602 on the described lockplate 601; All offer several jacks 505 on described lockplate 601 and the friction wheel 501; Lockplate 601 is fixedly installed on the swing arm 400 and is positioned at the sidepiece of mandrel 503, and locking component 602 elasticity are connected on the lockplate 601.The end of described locking component 602 can be passed described lockplate 601 and radially be inserted in the jack on the described friction wheel 501, and lockout mechanism is in the lock state; And when described locking component 602 broke away from the jack of described friction wheel 501, described lockout mechanism 600 was in released state.
The principle of work of the utility model is: pull handle 200 with hand, handle 200 drivening rods 300, and then drive swing arm 400 fulcrum rotation around it on make on the descending trailing wheel 2 that is pressed in wheelchair of the brake assemblies 500 that is installed in swing arm 400 bottoms.When connecting rod 300 is positioned at same straight line with the point of connection that base plate 100 and handle 200 are installed, can accomplish self-locking.Be positioned at normal danger at brake assemblies, and lockout mechanism is in released state following time, this moment, wheelchair was in half braking state; Under this state,, therefore can limit wheelchair and retreat owing in the brake assemblies 500 unilateral bearing 502 is installed; This moment, wheelchair can move ahead because friction wheel 501 still can clockwise rotate, so trailing wheel can rotate counterclockwise forward; The downslide of wheelchair when going up a slope be can prevent like this, safety and fiduciary level improved; And, therefore can increase car resistance because friction wheel 501 is pressed against on the trailing wheel, when descending, can play the effect of speed limit, the safety in the time of can improving descending equally.When brake assemblies is positioned at normal danger; And lockout mechanism is in the lock state following time, and wheelchair is in full braking state, and this moment, wheelchair was by braking fully; Only need press the locking component on the lockout mechanism 600 602; It is inserted in the jack 505 on the friction wheel 501 can accomplishes locking, this moment, friction wheel 501 can't rotate again, relied on the friction force between friction wheel 501 and the trailing wheel to brake.
Embodiment 2: the difference of itself and embodiment 1 is lockout mechanism 600, and the brake assemblies 500 among the embodiment 2 is provided with lockout mechanism 600 vertically.Its structure is like Fig. 4,5, shown in 6, and brake assemblies 500 is made up of mandrel 503, friction wheel 501, unilateral bearing 502, mandrel nut 504 etc.On mandrel 503, be welded with the bigger lockplate of external diameter 601; Two symmetrical lockplate jacks 604 are arranged on the lockplate 601; Jack 505 on the friction wheel 501 is arranged on its axial end; Friction wheel 501 is installed in an end of mandrel 503 with unilateral bearing 502, and passes through mandrel nut 504 axial restraints.Lockout mechanism 600 is made up of lockplate 601, locking component 602 and clutch end cap 603 etc., has on the clutch end cap 603 and jack 604 cooresponding holes, and two locking components 602 are interference fitted in the hole of clutch end cap 603.Clutch end cap 603 is through mandrel nut 504, spring shim 606 and the spring 605 elastomeric mounting other end at mandrel 503.The user presses clutch end cap 603 vertically can make locking component 602 pass the jack on the lockplate 601; Insert in the jack on the friction wheel 501; Thereby lock; In the time of need carrying out release to lockout mechanism, extract clutch end cap 603 gently, spring 605 can help clutch end cap 603 to reset rapidly.
The foregoing description only is the technical conceive and the characteristics of explanation the utility model, and its purpose is to let the personage who is familiar with this technology can understand content of the utility model and enforcement according to this, can not limit the protection domain of the utility model with this.All equivalences of being done according to the utility model spirit change or modify, and all should be encompassed within the protection domain of the utility model.
Claims (9)
1. brake structure; Comprise with the installation base plate of wheelchair frame captive joint, be movably arranged on the described installation base plate and in order to contact and the brake assemblies of the wheelchair trailing wheel that rubs; It is characterized in that: described brake assemblies comprise mandrel, can folk prescription to being set in friction wheel on the described mandrel rotationally, being used to make the lockout mechanism of described friction wheel and the relative spline of described mandrel; When described lockout mechanism is in the lock state, the relative spline of described friction wheel with described mandrel; When described lockout mechanism was in released state, described friction wheel only can rotate to single direction with respect to described mandrel.
2. brake structure according to claim 1 is characterized in that: be provided with unilateral bearing between described friction wheel and the described mandrel.
3. brake structure according to claim 1; It is characterized in that: described lockout mechanism comprises: with the relatively-stationary lockplate of described mandrel be movably connected in the locking component on the described lockplate; All offer jack on described lockplate and the described friction wheel; When described lockout mechanism was in the lock state, the end of described locking component was passed described lockplate and is inserted in the jack on the described friction wheel; When described lockout mechanism was in released state, described locking component broke away from the jack of described friction wheel.
4. brake structure according to claim 3; It is characterized in that: described lockout mechanism also comprises the clutch end cap that can flexibly be connected vertically on the described mandrel; Described locking component is fixed on the described clutch end cap, described friction wheel, lockplate and clutch end cap vertically serial arrangement on described mandrel.
5. brake structure according to claim 3; It is characterized in that: described lockplate is arranged on the sidepiece of described mandrel; When described lockout mechanism was in the lock state, the end of described locking component was passed described lockplate and radially is inserted in the jack on the described friction wheel; When described lockout mechanism was in released state, described locking component broke away from the jack of described friction wheel.
6. brake structure according to claim 5 is characterized in that: described locking component flexibly is connected on the described lockplate.
7. brake structure according to claim 1; It is characterized in that: it also comprises the handle that is rotatably connected on the described installation base plate, be rotatably connected on swing arm, an end and the described handle installation of installing on the base plate connecting rod that the other end and described swing arm be hinged that is hinged, and described mandrel is fixedly installed on an end of described swing arm.
8. brake structure according to claim 1 is characterized in that: the external peripheral surface of described friction wheel has the texture line.
9. wheelchair, it comprises: a pair of symmetrical vehicle frame, be rotatably connected on front-wheel and trailing wheel on the described vehicle frame, it is characterized in that: it also has like brake structure any in the claim 1～8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202632949U CN202180841U (en) | 2011-07-25 | 2011-07-25 | Brake structure and wheelchair with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202632949U CN202180841U (en) | 2011-07-25 | 2011-07-25 | Brake structure and wheelchair with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202180841U true CN202180841U (en) | 2012-04-04 |
Family
ID=46173888
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202632949U Expired - Fee Related CN202180841U (en) | 2011-07-25 | 2011-07-25 | Brake structure and wheelchair with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202180841U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102398661A (en) * | 2011-07-25 | 2012-04-04 | 卫美恒(苏州)医疗器械有限公司 | Brake structure and wheelchair comprising same |
| CN105817796A (en) * | 2016-05-31 | 2016-08-03 | 孝感市步集电子商务有限公司 | Welding carriage powered by solar energy |
| CN105817803A (en) * | 2016-05-31 | 2016-08-03 | 孝感市步集电子商务有限公司 | Welding carriage control system for continuous welding technology |
| CN105817800A (en) * | 2016-05-31 | 2016-08-03 | 俞升洋 | Controllable welding device |
| CN105921920A (en) * | 2016-05-31 | 2016-09-07 | 俞升洋 | Welding seam welding vehicle |
| CN106002018A (en) * | 2016-05-31 | 2016-10-12 | 俞升洋 | Durable welding tractor |
-
2011
- 2011-07-25 CN CN2011202632949U patent/CN202180841U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102398661A (en) * | 2011-07-25 | 2012-04-04 | 卫美恒(苏州)医疗器械有限公司 | Brake structure and wheelchair comprising same |
| CN102398661B (en) * | 2011-07-25 | 2013-05-08 | 卫美恒(苏州)医疗器械有限公司 | Brake structure and wheelchair comprising same |
| CN105817796A (en) * | 2016-05-31 | 2016-08-03 | 孝感市步集电子商务有限公司 | Welding carriage powered by solar energy |
| CN105817803A (en) * | 2016-05-31 | 2016-08-03 | 孝感市步集电子商务有限公司 | Welding carriage control system for continuous welding technology |
| CN105817800A (en) * | 2016-05-31 | 2016-08-03 | 俞升洋 | Controllable welding device |
| CN105921920A (en) * | 2016-05-31 | 2016-09-07 | 俞升洋 | Welding seam welding vehicle |
| CN106002018A (en) * | 2016-05-31 | 2016-10-12 | 俞升洋 | Durable welding tractor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120404 Termination date: 20130725 |